A surface treatment process for stainless steel flux-cored wire

A flux-cored wire and surface treatment technology, which is applied in welding equipment, manufacturing tools, welding media, etc., can solve problems such as pores on the surface of the weld bead, and achieve the effect of smooth wire feeding, healthy wire, and clean wire surface

Active Publication Date: 2018-10-23
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing stainless steel flux cored wire will have defects such as pores on the surface of the weld bead during welding due to oiling before rolling and the use of wire drawing powder in the drawing process, the present invention provides A stainless steel flux-cored wire surface treatment process, which can completely eliminate foreign impurities such as oil stains and wire drawing powder brought in by the stainless steel flux-cored wire during rolling and drawing, and coat a molecular level on the surface of the wire Thick volatile oil film to ensure the normal wire feeding of the welding wire, thereby eliminating welding defects

Method used

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  • A surface treatment process for stainless steel flux-cored wire

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Embodiment 1

[0022] A surface treatment process for stainless steel flux-cored welding wire. First, the stainless steel flux-cored welding wire is heated instantaneously to eliminate oil stains and wire drawing powder on the surface of the welding wire, and then the surface is coated with existing special lubricating oil for smooth wire feeding;

[0023] The instantaneous heating refers to raising the temperature of the stainless steel flux-cored wire to 180° C. within 1 second in an aerobic environment, and then naturally cooling to normal temperature;

[0024] The coating of special lubricating oil on the surface of the welding wire refers to the use of electrostatic oiling method to coat the surface of the welding wire with a layer of molecular-level thick oil film, and the coating amount of the special lubricating oil is 1g of special lubricating oil per 100kg of welding wire .

Embodiment 2

[0026] A surface treatment process for stainless steel flux-cored welding wire. First, the stainless steel flux-cored welding wire is heated instantaneously to eliminate oil stains and wire drawing powder on the surface of the welding wire, and then the surface is coated with existing special lubricating oil for smooth wire feeding;

[0027] The instantaneous heating refers to raising the temperature of the stainless steel flux-cored wire to 240° C. within 2 seconds in an aerobic environment, and then cooling it naturally to room temperature;

[0028] The coating of special lubricating oil on the surface of the welding wire means that the surface of the welding wire is coated with a layer of molecular-level thick oil film by means of electrostatic oiling, and the coating amount of the special lubricating oil is 4g of special lubricating oil per 100kg of welding wire. .

Embodiment 3

[0030] A surface treatment process for stainless steel flux-cored welding wire. First, the stainless steel flux-cored welding wire is heated instantaneously to eliminate oil stains and wire drawing powder on the surface of the welding wire, and then the surface is coated with existing special lubricating oil for smooth wire feeding;

[0031] The instantaneous heating refers to raising the temperature of the stainless steel flux-cored welding wire to 180° C. within 2 seconds in an aerobic environment, and then naturally cooling to normal temperature;

[0032] The coating of special lubricating oil on the surface of the welding wire means that the surface of the welding wire is coated with a layer of molecular-level thick oil film by means of electrostatic oiling, and the coating amount of the special lubricating oil is 4g of special lubricating oil per 100kg of welding wire. .

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Abstract

The invention discloses a stainless steel flux-cored wire surface treatment process, and belongs to the field of production of welding materials. A stainless steel flux-cored wire is instantly heated firstly to remove oil dirt and wire drawing powder on the surface of the wire, and then the surface of the stainless steel flux-cored wire is coated with existing special lubricating oil for smooth wire feeding. The stainless steel flux-cored wire is instantly heated, and therefore the oil dirt and the wire drawing powder which are left on the surface of the stainless steel flux-cored wire are burnt off without damaging the flux core powder ingredients of the stainless steel flux-cored wire. The surface of the stainless steel flux-cored wire is coated with an oil film with the molecular-level thickness to achieve the aim of normal and smooth wire feeding. Due to the fact that the oil film is evenly smeared to the surface of the wire, and especially a joint of the stainless steel flux-cored wire is also coated with a small quantity of oil film, a channel allowing water vapor to enter flux core powder is thoroughly closed; and a moisture preventing function can also be achieved, and therefore the stainless steel flux-cored wire can be suitable for all-weather welding.

Description

technical field [0001] The invention relates to the production field of welding materials, in particular to a surface treatment process for stainless steel flux-cored welding wire. Background technique [0002] The steel strips used for the production of stainless steel flux-cored wires are generally 304 or 304L steel strips, which need to be produced by cold rolling. In order to ensure that the steel strip can be deformed according to the production process and reach the predetermined size during the cold rolling process, it is often necessary to coat a layer of rolling special lubricating oil on the surface of the steel strip. This kind of lubricating oil needs to be thoroughly cleaned after rolling before it can be used in the production of stainless steel flux cored wire. The surface of cleaned 304 or 304L steel strip is often relatively dry and has high friction force. In addition, the stainless steel itself has a strong anti-deformation ability. Powder" situation. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40
CPCB23K35/406
Inventor 冯兆龙徐飞郭纯
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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